Configure.pl fails during the post-migration procedure of Parallels Business Automation - Enterprise for Windows

Symptoms

During the migration of Parallels Business Automation - Enterprise (PBA-E) to Windows 2008, the second configure.pl fails with an error that states the script cannot create the pba database because it already exists.

It is not clear why configure.pl is trying to create the pba database as it already exists. The script is supposed to connect to the existing database and reconfigure the destination installation using new IP addresses only.

Cause

configure.pl requires the "SQL Native Client" driver to be installed on the system. The connection to the MSSQL server occurs via DSN, which is configured in:

Administrative Tools > Data Sources (ODBC) > System DSN

If the configuration of DSN is not correct, the connection fails, the script switches to the "new installation" mode, and therefore tries to perform a new installation of PBA-E using DB_HOST IP address from %PBA_DIR%\etc\ssm.conf.d\global.conf.